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Slag used in fusion welding contains manganese.

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Slag used in fusion welding contains manganese.

(a) True

(b) False

I had been asked this question in semester exam.

Question is taken from Metallurgy of Weld topic in section Welding and Related Processes of Casting-Forming-Welding II
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Correct choice is (a) True

Explanation: Slags used in welding are generally a combination of silica materials and some carbonate compounds. In fusion welding, some amount of bead control has to be done, which is done by the slags, for this purpose, to improve its performance, microelements like manganese are added.
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